The sugject says it all, what type of silicone would you suggest or use?

 

Just a little dab of black silicone in the joints where the cork meets the intake gasket should be all you need if all the surfaces are prepped and cleaned.

 

i usually use the china wall gasket, but if you're set on rtv all i use is ultracopper or ultragrey ,both cost a bit more than the run of the mill black or clear but i believe they do a better job of sealing and last longer. actually i've used ultracopper for head gaskets, not with a head gasket but as a head gasket.

 

I suggest using a 1/4" bead of black across the front and back.

 

alright, thanks, just wanted to see what everybody was using

 

Don't use the china wall gaskets (my advice).... They will pop out of place 90% of the time and a pure silicone bead will work better when done right.

Use GM RTV Silicone Sealant Gray, part # 12346240 . Done more intakes than I care to remember and never had a problem with that silicone. Getting the intake back off can be interesting though at times as it REALLY holds..... I have also used the Permatex Ultra Black in a pinch and it has worked out fine as well. Do a search on this subject and you will get more information than you can possibly imagine. But the key is the cleanliness of the surfaces and the use of a thin layer of silicone on the intake itself and a thick bead on the china walls of the block itself.

Ultra Copper on an intake gasket job??????

 

Never had to use more than a little dab of RTV sealant on each corner where the end gasket meets the side gaskets.
Clean and de-oil the surfaces with "pro brake cleaner" before installing the gaskets. Other wise the gasket can "slip and slide"
on the oily surface. Thats usually the cause of the end gaskets blowing out.

 

its by permatex-its called "the right stuff" been out a couple years-oem approved. one way its packaged is in a metal can like plastic cheese in a can and its dispensed the same way-by bending the nozzle over and it just oozes out. stuff dries to the toughest silicone bead-ck. out this link and see what they say about end seals-http://www.permatex.com/right_stuff/right_stuff3.asp i have been using it for a couple years and it is what they say. more expensive, but you look like a saint after a couple years and there isnt even seeping going on.